On Wed, Oct 09, 2024 at 09:47:34PM -0500, Joachim Vandersmissen wrote: > The Jitter RNG time delta is computed based on the difference of two > high-resolution, 64-bit time stamps. However, the test interface added > in 69f1c387ba only outputs the lower 32 bits of those time stamps. To > ensure all information is available during the evaluation process of > the Jitter RNG, output the full 64-bit time stamps. > > Any clients collecting data from the test interface will need to be > updated to take this change into account. > > Additionally, the size of the temporary buffer that holds the data for > user space has been clarified. Previously, this buffer was > JENT_TEST_RINGBUFFER_SIZE (= 1000) bytes in size, however that value > represents the number of samples held in the kernel space ring buffer, > with each sample taking 8 (previously 4) bytes. > > Rather than increasing the size to allow for all 1000 samples to be > output, we keep it at 1000 bytes, but clarify that this means at most > 125 64-bit samples will be output every time this interface is called. > > Reviewed-by: Stephan Mueller <smueller@xxxxxxxxxx> > Signed-off-by: Joachim Vandersmissen <git@xxxxxxxxx> > --- > crypto/jitterentropy-testing.c | 31 ++++++++++++++++--------------- > crypto/jitterentropy.h | 4 ++-- > 2 files changed, 18 insertions(+), 17 deletions(-) Patch applied. Thanks. -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
